Questions_Chiller_Project.doc

1. Question came up about section 5.0 or 5.2 in the request on FEDBIZops replacement of 2 50 ton chillers verses another description of what was to be removed. For clarification, 2ea Carrier 30HR100-A160 chillers are being replaced with 2ea 50ton chillers per spec provided.

2. Controls contractor for ESC automation wants to know if drawing are as built? Can they get prints? Is ESC quoting the work? Sub contract? Contractor for the controls is ESC Automation. Eric Shimmin is the Branch Director in Bothell. His contact info is DIRECT 425 487 8613 CELL 425 877 6762 TOLL FREE 1 800 692 4746 EMAIL eshimmin@deltaconnects.com He can provide you with details and pricing on any graphics alarms and connection points needed.

3. Where does the remove material end up is there any specific rules as to what the contractor has to dispose of it. Contractor is responsible for proper recovery, removal and disposal. Records will not be required to be filed with FEMA.

4. Question about built drawings of building? Drawings were provided on posting. Additional drawings can be provided on request.

5. Question about the refrigerant in both handlers. R22. Conditioned water to the air handlers. Closed loop to the cooling tower is glycol (should be veified)

6. What was included in the drawing ?Does it include the generator room as built? Yes.

7. Question on fiberglass of the lid and the asbestos I think it was the pipe wraps ? None of the pipe wraps contain asbestos. The original wraps were removed and replaced previously.

8. Removal of the chiller what route

a. Remove fuse box panels on wall and to access it from the closet wall opposite sides? Yes this option is available Concern of where box marked fire alarm is if used ? We believe that is for the generator room only. It will require further investigation into the building electrical drawings.

b. Make hole in wall by 2 compressors. How many compressors need to be running all the time? Yes this option is available One needs to stay operational at all times.

c. Questions about air in room. There is a dedicated air handler for this space with return.

9. How many gate valves on compressors? There are 10 total valves for the system, 8 are being requested to be replaced. Photos of each are attached.

10. Question on exhaust to remove the smoke. There is a dedicated air handler for this space with return.

11. Can the generators one of them be moved? Yes, one generator can be taken off line and moved if disconnected and reconnected by properly trained and approved personnel.

12. Checked to see if additional wiring/fuses will need to be used verse the one already here. If it is determined that they will be required for the new installation, then yes under the requirements of the SOW.

13. Want copy of upper and lower floor evacuation routs. Evacuation routes will be provided and attached to the posting for review.

14. Just clarifying that both 100 ton Carrier water cooled reciprocating chillers are being replaced. Yes, both Carrier 30HR100-A160 chiller are being replaced.

15. Also that the spec is MultiStack MS50X or equal regarding overall electrical performance, Correct? Based on electrical and cooling performance data